Arm crashes when TAKEOWNERSHIP command is issued in panel mode

Traceback (most recent call last):
  File "./src/starter.py", line 543, in <module>
    cli.controller.startTorMonitor(time.time() - initTime)
  File "/Downloads/arm/src/cli/controller.py", line 683, in startTorMonitor
    curses.wrapper(drawTorMonitor, startTime)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/curses/wrapper.py", line 43, in wrapper
    return func(stdscr, *args, **kwds)
  File "/Downloads/arm/src/cli/controller.py", line 784, in drawTorMonitor
    isKeystrokeConsumed = panelImpl.handleKey(key)
  File "/Downloads/arm/src/cli/interpretorPanel.py", line 96, in handleKey
    self.prompt()
  File "/Downloads/arm/src/cli/interpretorPanel.py", line 73, in prompt
    input, isDone = input.strip(), False
AttributeError: 'NoneType' object has no attribute 'strip'